Casing of a hand held X-ray fluorescence (XRF) analyzer instrument



FIG. 1 is an isometric view of a casing of a hand held XRF analyzer instrument shown with an environment;

FIG. 2 is an isometric view thereof shown without an environment;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a back view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken line showing of the strap in FIG. 1 represents an environment and forms no part of the claimed design. 

CLAIM The ornamental design for a casing of a hand held x-ray fluorescence (XRF) analyzer instrument, as shown and described. 